21142333232 has 40 divisors (see below), whose sum is σ = 41433709680. Its totient is φ = 10450092800.

The previous prime is 21142333231. The next prime is 21142333243. The reversal of 21142333232 is 23233324112.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21142333231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1055018 + ... + 1074870.

It is an arithmetic number, because the mean of its divisors is an integer number (1035842742).

Almost surely, 2^21142333232 is an apocalyptic number.

It is an amenable number.

21142333232 is a deficient number, since it is larger than the sum of its proper divisors (20291376448).

21142333232 is a wasteful number, since it uses less digits than its factorization.

21142333232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20621 (or 20615 counting only the distinct ones).

The product of its digits is 5184, while the sum is 26.

Adding to 21142333232 its reverse (23233324112), we get a palindrome (44375657344).

The spelling of 21142333232 in words is "twenty-one billion, one hundred forty-two million, three hundred thirty-three thousand, two hundred thirty-two".